import "./enterDetailsLayout.css"

import { differenceInCalendarDays, format, isWeekend } from "date-fns"
import { notFound } from "next/navigation"

import { Lang } from "@/constants/languages"
import {
  getBreakfastPackages,
  getCreditCardsSafely,
  getHotelData,
  getProfileSafely,
  getSelectedRoomAvailability,
} from "@/lib/trpc/memoizedRequests"

import BedType from "@/components/HotelReservation/EnterDetails/BedType"
import Breakfast from "@/components/HotelReservation/EnterDetails/Breakfast"
import Details from "@/components/HotelReservation/EnterDetails/Details"
import HistoryStateManager from "@/components/HotelReservation/EnterDetails/HistoryStateManager"
import Payment from "@/components/HotelReservation/EnterDetails/Payment"
import SectionAccordion from "@/components/HotelReservation/EnterDetails/SectionAccordion"
import SelectedRoom from "@/components/HotelReservation/EnterDetails/SelectedRoom"
import {
  generateChildrenString,
  getQueryParamsForEnterDetails,
} from "@/components/HotelReservation/SelectRate/RoomSelection/utils"
import TrackingSDK from "@/components/TrackingSDK"
import { getIntl } from "@/i18n"

import { StepEnum } from "@/types/components/hotelReservation/enterDetails/step"
import { SelectRateSearchParams } from "@/types/components/hotelReservation/selectRate/selectRate"
import {
  TrackingChannelEnum,
  TrackingSDKHotelInfo,
  TrackingSDKPageData,
} from "@/types/components/tracking"
import type { LangParams, PageArgs } from "@/types/params"

function isValidStep(step: string): step is StepEnum {
  return Object.values(StepEnum).includes(step as StepEnum)
}

export default async function StepPage({
  params,
  searchParams,
}: PageArgs<LangParams & { step: StepEnum }, SelectRateSearchParams>) {
  const { lang } = params

  const intl = await getIntl()
  const selectRoomParams = new URLSearchParams(searchParams)
  const {
    hotel: hotelId,
    rooms,
    fromDate,
    toDate,
  } = getQueryParamsForEnterDetails(selectRoomParams)

  const {
    adults,
    children,
    roomTypeCode,
    rateCode,
    packages: packageCodes,
  } = rooms[0] // TODO: Handle multiple rooms

  const childrenAsString = children && generateChildrenString(children)

  const breakfastInput = { adults, fromDate, hotelId, toDate }
  void getBreakfastPackages(breakfastInput)
  void getSelectedRoomAvailability({
    hotelId,
    adults,
    children: childrenAsString,
    roomStayStartDate: fromDate,
    roomStayEndDate: toDate,
    rateCode,
    roomTypeCode,
    packageCodes,
  })

  const roomAvailability = await getSelectedRoomAvailability({
    hotelId,
    adults,
    children: childrenAsString,
    roomStayStartDate: fromDate,
    roomStayEndDate: toDate,
    rateCode,
    roomTypeCode,
    packageCodes,
  })
  const hotelData = await getHotelData({
    hotelId,
    language: lang,
    isCardOnlyPayment: roomAvailability?.mustBeGuaranteed,
  })
  const breakfastPackages = await getBreakfastPackages(breakfastInput)
  const user = await getProfileSafely()
  const savedCreditCards = await getCreditCardsSafely()

  if (!isValidStep(params.step) || !hotelData || !roomAvailability) {
    return notFound()
  }

  const mustBeGuaranteed = roomAvailability?.mustBeGuaranteed ?? false

  const paymentGuarantee = intl.formatMessage({
    id: "Payment Guarantee",
  })
  const payment = intl.formatMessage({
    id: "Payment",
  })
  const guaranteeWithCard = intl.formatMessage({
    id: "Guarantee booking with credit card",
  })
  const selectPaymentMethod = intl.formatMessage({
    id: "Select payment method",
  })

  const roomPrice =
    user && roomAvailability.memberRate
      ? roomAvailability.memberRate?.localPrice.pricePerStay
      : roomAvailability.publicRate!.localPrice.pricePerStay

  const arrivalDate = new Date(searchParams.fromDate)
  const departureDate = new Date(searchParams.toDate)
  const hotelAttributes = hotelData?.data.attributes

  const pageTrackingData: TrackingSDKPageData = {
    pageId: "select-rate",
    domainLanguage: params.lang as Lang,
    channel: TrackingChannelEnum["hotelreservation"],
    pageName: "hotelreservation|select-rate",
    siteSections: "hotelreservation|select-rate",
    pageType: "bookingroomsandratespage",
  }

  const hotelsTrackingData: TrackingSDKHotelInfo = {
    searchTerm: searchParams.city,
    arrivalDate: format(arrivalDate, "yyyy-MM-dd"),
    departureDate: format(departureDate, "yyyy-MM-dd"),
    noOfAdults: adults,
    noOfChildren: children?.length,
    //childBedPreference // "adults|adults|extra|adults"
    noOfRooms: 1, // // TODO: Handle multiple rooms
    duration: differenceInCalendarDays(departureDate, arrivalDate),
    leadTime: differenceInCalendarDays(arrivalDate, new Date()),
    searchType: "hotel",
    bookingTypeofDay: isWeekend(arrivalDate) ? "weekend" : "weekday",
    country: hotelAttributes?.address.country,
    region: hotelAttributes?.address.city,
  }

  return (
    <>
      <HistoryStateManager />
      <SelectedRoom
        hotelId={hotelId}
        room={roomAvailability.selectedRoom}
        rateDescription={roomAvailability.cancellationText}
      />

      {/* TODO: How to handle no beds found? */}
      {roomAvailability.bedTypes ? (
        <SectionAccordion
          header="Select bed"
          step={StepEnum.selectBed}
          label={intl.formatMessage({ id: "Request bedtype" })}
        >
          <BedType bedTypes={roomAvailability.bedTypes} />
        </SectionAccordion>
      ) : null}

      <SectionAccordion
        header={intl.formatMessage({ id: "Food options" })}
        step={StepEnum.breakfast}
        label={intl.formatMessage({ id: "Select breakfast options" })}
      >
        <Breakfast packages={breakfastPackages} />
      </SectionAccordion>
      <SectionAccordion
        header={intl.formatMessage({ id: "Details" })}
        step={StepEnum.details}
        label={intl.formatMessage({ id: "Enter your details" })}
      >
        <Details user={user} />
      </SectionAccordion>
      <SectionAccordion
        header={mustBeGuaranteed ? paymentGuarantee : payment}
        step={StepEnum.payment}
        label={mustBeGuaranteed ? guaranteeWithCard : selectPaymentMethod}
      >
        <Payment
          roomPrice={roomPrice}
          otherPaymentOptions={
            hotelData.data.attributes.merchantInformationData
              .alternatePaymentOptions
          }
          savedCreditCards={savedCreditCards}
          mustBeGuaranteed={mustBeGuaranteed}
        />
      </SectionAccordion>
      <TrackingSDK pageData={pageTrackingData} hotelInfo={hotelsTrackingData} />
    </>
  )
}